Dishonest Sales

Searched for a tyre online. The Braamfontein branch showed it has stock. The price was R 3521 with a R50 discount which would have been R 3471.30 including vat. When I go the store and show him the online quote he backtracks and says he can't sell it for that price. He wanted R 3550. Its not a lot of money but its the principle. Very dishonest and left disappointed.